It's positive. The fork will burn 55 million coins from future existence, meaning the total coins in circulation will go down to around 165 million as opposed to 216 million in circulation today. Therefore, less coins after the fork will (or should) increase the price almost instantly. Impossible to say by how much, so we will see.

Right now it'll probably be a bumpy ride for the next weeks. I'd expect a lot of profit taking will happen, causing a few wild swings like the last few days.